Retainer assembling apparatus and retainer assembling method
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United States of America Patent
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Aug 5, 2014
Grant Date -
Nov 15, 2012
app pub date -
May 11, 2012
filing date -
May 13, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
This invention provides a retainer assembling apparatus which assembles a retainer to a valve stem via a cotter which engage with an engaging groove formed on the valve stem. The cotter comprises a pair of cotter segments. The apparatus includes a cylindrical body, a holding portion which holds the retainer contacting a lower end of the cylindrical body, a push-up shaft which pushes up the pair of cotter segments into the cylindrical body, and an axial body which is arranged in the cylindrical body to be coaxial with the push-up shaft and to be coaxially movable. The cylindrical body includes a tapered inner circumferential portion on an inner circumferential wall lower portion thereof.
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